# (ongoing) LA to put <code>C_SPECIES</code> definitions in the ''Redundant Code'' table (short-term), and switch to use <code>M_SPECIES</code> instead. Talk with JH about AQUM tests and requirements. Note that there will be problems with exoplanets and >100km top configs where M_air not constant. LA to make a branch and progress for vn11.6.

# (ongoing) LA to put <code>C_SPECIES</code> definitions in the ''Redundant Code'' table (short-term), and switch to use <code>M_SPECIES</code> instead. Talk with JH about AQUM tests and requirements. Note that there will be problems with exoplanets and >100km top configs where M_air not constant. LA to make a branch and progress for vn11.6.

+

#* Ongoing

# (new) '''ALL''' to consider '''[[Monsoon users MASS data]] plan''' and feedback to FOC within 2 weeks. Please also include suggestions for local ''points of contact''.

# (new) '''ALL''' to consider '''[[Monsoon users MASS data]] plan''' and feedback to FOC within 2 weeks. Please also include suggestions for local ''points of contact''.

+

#* Ongoing

+

#* '''ACTION:''' LA to check with FOC on progress

# (new) AH/FOC to assign people following feedback

# (new) AH/FOC to assign people following feedback

+

#* Ongoing

# (ongoing) LA to contact AS/AJH and ask how best to proceed with removing the depreciated NetCDF attribute options. Do after GA8 is released as still required for GA7.

# (ongoing) LA to contact AS/AJH and ask how best to proceed with removing the depreciated NetCDF attribute options. Do after GA8 is released as still required for GA7.

+

#* Ongoing

# (new) JH to update API document and ask for further feedback on this when completed

# (new) JH to update API document and ask for further feedback on this when completed

+

#* Available as a 2nd draft now, will circulate more generally soon

+

#* Ongoing

# (ongoing) GM (supported by KP/MY/AH) to make table on UKCA wiki documenting this. LA to email. See [[GLOMAP versions]]

# (ongoing) GM (supported by KP/MY/AH) to make table on UKCA wiki documenting this. LA to email. See [[GLOMAP versions]]

+

#* Ongoing

+

#* '''ACTION:''' LA to email GM

# (ongoing) LA to contact MH/OW regarding FastJX-GLOMAP coupling. Follow-up after UMvn11.5 is released. LA to check with FOC about who will do this.

# (ongoing) LA to contact MH/OW regarding FastJX-GLOMAP coupling. Follow-up after UMvn11.5 is released. LA to check with FOC about who will do this.

+

#* FOC will contact OW about this

+

#* Ongoing

# (ongoing) MD to update um_ukca_eg app to be more in line with UKESM1, and add a rigorous test. Convered by #5294, branch being reviewed

# (ongoing) MD to update um_ukca_eg app to be more in line with UKESM1, and add a rigorous test. Convered by #5294, branch being reviewed

# (new) LA to send a Doodle poll for 2 weeks following 16th March 2020

# (new) LA to send a Doodle poll for 2 weeks following 16th March 2020

#* '''https://doodle.com/poll/r5kf3iryve5b8skc'''

#* '''https://doodle.com/poll/r5kf3iryve5b8skc'''

+

#* Closed

==== Standing actions ====

==== Standing actions ====

Line 75:

Line 94:

!style="text-align:top;rowspan=2";|Comments from this meeting

!style="text-align:top;rowspan=2";|Comments from this meeting

|-

|-

−

| 35 || Error in labelling: Surface resistance <--> stomatal resistance ? || [https://code.metoffice.gov.uk/trac/um/ticket/1409 UM:#1409] || '''Fiona O'Connor''' || Leave open. Garry Hayman started work in offline JULES. <br/> Still ongoing. JM found bug in SO2 deposition, where there is an inconsistency when changing tiles. Making progress. <br/> Leave open. GH gave update, has done a lot of work. Concerned it might not be bit-reproducable, but could be solvable. Encouraging to lodge existing. Resistances done as metadata. Not clear as to timescales.<br/> FOC to encourage Garry Hayman to start lodging JULES code piecemeal. <br/> LA to email GH, cc JM ||

+

| 35 || Error in labelling: Surface resistance <--> stomatal resistance ? || [https://code.metoffice.gov.uk/trac/um/ticket/1409 UM:#1409] || '''Fiona O'Connor''' || Leave open. Garry Hayman started work in offline JULES. <br/> Still ongoing. JM found bug in SO2 deposition, where there is an inconsistency when changing tiles. Making progress. <br/> Leave open. GH gave update, has done a lot of work. Concerned it might not be bit-reproducable, but could be solvable. Encouraging to lodge existing. Resistances done as metadata. Not clear as to timescales.<br/> FOC to encourage Garry Hayman to start lodging JULES code piecemeal. <br/> LA to email GH, cc JM || JM to email GH

|-

|-

−

| 101 || Errors in reaction rates and diagnostics || [https://code.metoffice.gov.uk/trac/um/ticket/4466 UM:#4466] || '''Luke Abraham / Scott Archer-Nicolls''' || There is a need to conserve science config for UKESM1, so changes need to be on a flag.<br/>Colin has been looking at DMSO, as this is not currently used in StratTrop but is in Offline.<br/>Might be able to merge the rate with CEJ changes, but best to leave the diagnostic issues as a separate change. <br/> LA, JM, CEJ, SAN to discuss offline and keep GM in loop.<br/>Use versioning system. Talk about further offline. <br/> Keep ongoing. <br/> LA to do with #103 <br/> Do for vn11.6. Quite a large ticket. <br/> Hope to progress for vn11.6 <br/> Bump for vn11.7 ||

+

| 101 || Errors in reaction rates and diagnostics || [https://code.metoffice.gov.uk/trac/um/ticket/4466 UM:#4466] || '''Luke Abraham / Scott Archer-Nicolls''' || There is a need to conserve science config for UKESM1, so changes need to be on a flag.<br/>Colin has been looking at DMSO, as this is not currently used in StratTrop but is in Offline.<br/>Might be able to merge the rate with CEJ changes, but best to leave the diagnostic issues as a separate change. <br/> LA, JM, CEJ, SAN to discuss offline and keep GM in loop.<br/>Use versioning system. Talk about further offline. <br/> Keep ongoing. <br/> LA to do with #103 <br/> Do for vn11.6. Quite a large ticket. <br/> Hope to progress for vn11.6 <br/> Bump for vn11.7 || LA may be able to progress. Versioning has been done separately. Another issue was added to this recently, to do with formation of H2O - may have an impact

|-

|-

| 103 || Incorrect indexing of tmprc array: ASAD_SPIMPMJP || [https://code.metoffice.gov.uk/trac/um/ticket/4562 UM:#4562] || '''Scott Archer-Nicolls''' || Breaks KGO - affects solver convergence. In practice doesn’t make a huge difference, but should go into vn11.4, but does change KGO. UKESM1 - small change might be OK - get in touch for advice - might be able to test with UKESM1 AMIP only. Check with Oliver Wild <br/> Could be rolled-up with #101 <br/> LA to do with #101 <br/> Bump for vn11.7 ||

| 103 || Incorrect indexing of tmprc array: ASAD_SPIMPMJP || [https://code.metoffice.gov.uk/trac/um/ticket/4562 UM:#4562] || '''Scott Archer-Nicolls''' || Breaks KGO - affects solver convergence. In practice doesn’t make a huge difference, but should go into vn11.4, but does change KGO. UKESM1 - small change might be OK - get in touch for advice - might be able to test with UKESM1 AMIP only. Check with Oliver Wild <br/> Could be rolled-up with #101 <br/> LA to do with #101 <br/> Bump for vn11.7 ||

|-

|-

−

| 104 || Incorrect value for Rc for SO_2 deposition to open water || [https://code.metoffice.gov.uk/trac/um/ticket/4635 UM:#4635] || '''Catherine Hardacre''' || Got to be separate to #35, unless there is an idea of timelines.<br/> JM to find someone to progress bug #104. <br/> LA to follow-up with JM <br/> Core group to do in new year ||

+

| 104 || Incorrect value for Rc for SO_2 deposition to open water || [https://code.metoffice.gov.uk/trac/um/ticket/4635 UM:#4635] || '''Catherine Hardacre''' || Got to be separate to #35, unless there is an idea of timelines.<br/> JM to find someone to progress bug #104. <br/> LA to follow-up with JM <br/> Core group to do in new year || Planned for vn11.7. JM to check for clashes with Steve Rumbold. Will add to vn11.7 group ticket. Guang Zeng at NIWA to review ddep resistances. JM to check with GZ about a new ticket for this. Code is complex and hard to read with temporary logicals

| 108 || Incorrect stash processing of GLOMAP ''load*, conc* and plume_scav'' diagnostics || [https://code.metoffice.gov.uk/trac/um/ticket/4909 UM:#4909] || '''Mohit Dalvi''' || To be Lodged after 10.6 <br/> Do after CMIP6 runs are finished (after Jan 2020) <br/> Timeline still on track <br/> Bump for vn11.7 || May be OK to lodge for vn11.7, but correction is hard-wired in postprocessing scripts. JM to check whether a later version is needed

| 114 || Bug in ukca_activate leading to droplet numbers being too high in the upper regions of continuous cloud columns <br/> Previously the number per m3 was replicated upwards from cloud base, but really this should be the number per kg of air to mimic what would happen in a rising air parcel (parcel expansion would lead to the number per m3 reducing with height as an air parcel rises, scaling with the air density). This is likely to make the largest difference for deep clouds where there are deep contiguous columns. || || || DG has a vn10.8 branch, but changes are self-contained. See ticket [https://code.metoffice.gov.uk/trac/um/ticket/5233 um:#5233].<br/> DG to progress ticket. LA to check original email for details & update table. LA contact DG offline. <br/> LA to discuss with DG offline to see about progressing ||

| 114 || Bug in ukca_activate leading to droplet numbers being too high in the upper regions of continuous cloud columns <br/> Previously the number per m3 was replicated upwards from cloud base, but really this should be the number per kg of air to mimic what would happen in a rising air parcel (parcel expansion would lead to the number per m3 reducing with height as an air parcel rises, scaling with the air density). This is likely to make the largest difference for deep clouds where there are deep contiguous columns. || || || DG has a vn10.8 branch, but changes are self-contained. See ticket [https://code.metoffice.gov.uk/trac/um/ticket/5233 um:#5233].<br/> DG to progress ticket. LA to check original email for details & update table. LA contact DG offline. <br/> LA to discuss with DG offline to see about progressing ||

| 117 || Fix call to extract_seg and insert_seg in ukca_aero_ctl || [https://code.metoffice.gov.uk/trac/um/ticket/4954 UM:#4954] || || See both scitech and code review of [https://code.metoffice.gov.uk/trac/um/wiki/ticket/4739/TicketDetails UM:#4739] || Closeas not a bug. MR had commented on ticket. <br/> '''ACTION:''' LA to email Maff, AJH, & MR about this and ask for an opinion.

|-

|-

−

| 119 || Incorrect calculation for gridbox area - only affects GLOMAP-mode diagnostics || || || Calculation of <code>volume</code> appears correct, but <code>area</code> is not. This calculation is missing the factor <code>fv_cos_theta_latitude</code> so will not cause area to tend towards zero at the poles. It also seems to use an unnecessary approximation to the latitude difference (based on <code>sinv_latitude</code>) which may break down at high latitudes. The calculation should perhaps be consistent with subsequent <code>volume</code> calculation but without the <code>delta_r</code> factor. This will likely only affect diagnostics calculated in <code>ukca_emiss_diags_mode</code>, where it is used to convert from kg/m2/s to mol/gridbox/s, although it is also printed out in <code>ukca_aero_ctl</code>. ||

+

| 119 || Incorrect calculation for gridbox area - only affects GLOMAP-mode diagnostics || || || Calculation of <code>volume</code> appears correct, but <code>area</code> is not. This calculation is missing the factor <code>fv_cos_theta_latitude</code> so will not cause area to tend towards zero at the poles. It also seems to use an unnecessary approximation to the latitude difference (based on <code>sinv_latitude</code>) which may break down at high latitudes. The calculation should perhaps be consistent with subsequent <code>volume</code> calculation but without the <code>delta_r</code> factor. This will likely only affect diagnostics calculated in <code>ukca_emiss_diags_mode</code>, where it is used to convert from kg/m2/s to mol/gridbox/s, although it is also printed out in <code>ukca_aero_ctl</code>. || JH spotted. Just diagnostic affected. <br/> '''ACTION:''' LA to open a ticket. cc JM, NC

|-

|-

−

| 120 || nr_steps warning message - eg um_n48_ga_amip_exp || [https://code.metoffice.gov.uk/trac/um/ticket/XXXX UM:#XXXX] || || Perhaps this should have a clean fail rather than warning? There may be a lot of rose-meta and code changes to allow nr_steps to be set in niche cases. ||

+

| 120 || nr_steps warning message - eg um_n48_ga_amip_exp || [https://code.metoffice.gov.uk/trac/um/ticket/XXXX UM:#XXXX] || || Perhaps this should have a clean fail rather than warning? There may be a lot of rose-meta and code changes to allow nr_steps to be set in niche cases. || Some chemistry schemes seem to need an NRSTEPS value when they shouldn’t. <br/>'''ACTION:''' MD to take on the ticket.

Actions from this meeting

Minutes

Actions from the Last Meeting (LA)

(ongoing) LA to put C_SPECIES definitions in the Redundant Code table (short-term), and switch to use M_SPECIES instead. Talk with JH about AQUM tests and requirements. Note that there will be problems with exoplanets and >100km top configs where M_air not constant. LA to make a branch and progress for vn11.6.

Ongoing

(new) ALL to consider Monsoon users MASS data plan and feedback to FOC within 2 weeks. Please also include suggestions for local points of contact.

Ongoing

ACTION: LA to check with FOC on progress

(new) AH/FOC to assign people following feedback

Ongoing

(ongoing) LA to contact AS/AJH and ask how best to proceed with removing the depreciated NetCDF attribute options. Do after GA8 is released as still required for GA7.

Ongoing

(new) JH to update API document and ask for further feedback on this when completed

Available as a 2nd draft now, will circulate more generally soon

Ongoing

(ongoing) GM (supported by KP/MY/AH) to make table on UKCA wiki documenting this. LA to email. See GLOMAP versions

Ongoing

ACTION: LA to email GM

(ongoing) LA to contact MH/OW regarding FastJX-GLOMAP coupling. Follow-up after UMvn11.5 is released. LA to check with FOC about who will do this.

FOC will contact OW about this

Ongoing

(ongoing) MD to update um_ukca_eg app to be more in line with UKESM1, and add a rigorous test. Convered by #5294, branch being reviewed

Standing actions

(ongoing - standing item) CMG to monitor list of bugs and circulate between group for owners.

(ongoing - standing item) At CMG future meetings there should be included an appendix listing the open bugs. If a ticket is included it is not an open bug (as the owner of ticket is person doing lodging).

(ongoing - standing item) ALL to think about if code changes will change KGO and let systems team know in good time, and remember to include the UKCA keywords to all UKCA tickets. This should be a standard part of our working practice. Note also the required keywords.

Bugs/Bugfixes (LA)

Leave open. Garry Hayman started work in offline JULES. Still ongoing. JM found bug in SO2 deposition, where there is an inconsistency when changing tiles. Making progress. Leave open. GH gave update, has done a lot of work. Concerned it might not be bit-reproducable, but could be solvable. Encouraging to lodge existing. Resistances done as metadata. Not clear as to timescales. FOC to encourage Garry Hayman to start lodging JULES code piecemeal. LA to email GH, cc JM

There is a need to conserve science config for UKESM1, so changes need to be on a flag.Colin has been looking at DMSO, as this is not currently used in StratTrop but is in Offline.Might be able to merge the rate with CEJ changes, but best to leave the diagnostic issues as a separate change. LA, JM, CEJ, SAN to discuss offline and keep GM in loop.Use versioning system. Talk about further offline. Keep ongoing. LA to do with #103 Do for vn11.6. Quite a large ticket. Hope to progress for vn11.6 Bump for vn11.7

LA may be able to progress. Versioning has been done separately. Another issue was added to this recently, to do with formation of H2O - may have an impact

Breaks KGO - affects solver convergence. In practice doesn’t make a huge difference, but should go into vn11.4, but does change KGO. UKESM1 - small change might be OK - get in touch for advice - might be able to test with UKESM1 AMIP only. Check with Oliver Wild Could be rolled-up with #101 LA to do with #101 Bump for vn11.7

Got to be separate to #35, unless there is an idea of timelines. JM to find someone to progress bug #104. LA to follow-up with JM Core group to do in new year

Planned for vn11.7. JM to check for clashes with Steve Rumbold. Will add to vn11.7 group ticket. Guang Zeng at NIWA to review ddep resistances. JM to check with GZ about a new ticket for this. Code is complex and hard to read with temporary logicals

Code is zq(:)=RESHAPE(q(:,:,k),(/theta_field_size/)) rather than zq(:) = RESHAPE(q(:,:,k),(/theta_field_size/))/c_h2o LA to take ownership and assess Do for vn11.6 Code is committed. Need to think about for GA8/9

To be Lodged after 10.6 Gerd noted unusual CH4 output in CMIP6 runs. May need a rose stem test for H2 and CH4 drdydep code lodged at UM:#4157 Makes a huge difference to CH4. Needs testing. AJH or GF will do during vn11.4, progress for vn11.6. May need UKESM1 approval. Code is difficult to understand. AJH thinks GarryH is aware of this problem. LA to ask GF to add more details GF has emailed. LA to update wiki pages (see below)

To be Lodged after 11.5 Have a solution. Solution is a bit tricky to check the logic correctly.

114

Bug in ukca_activate leading to droplet numbers being too high in the upper regions of continuous cloud columns Previously the number per m3 was replicated upwards from cloud base, but really this should be the number per kg of air to mimic what would happen in a rising air parcel (parcel expansion would lead to the number per m3 reducing with height as an air parcel rises, scaling with the air density). This is likely to make the largest difference for deep clouds where there are deep contiguous columns.

DG has a vn10.8 branch, but changes are self-contained. See ticket um:#5233. DG to progress ticket. LA to check original email for details & update table. LA contact DG offline. LA to discuss with DG offline to see about progressing

Close as not a bug. MR had commented on ticket. ACTION: LA to email Maff, AJH, & MR about this and ask for an opinion.

119

Incorrect calculation for gridbox area - only affects GLOMAP-mode diagnostics

Calculation of volume appears correct, but area is not. This calculation is missing the factor fv_cos_theta_latitude so will not cause area to tend towards zero at the poles. It also seems to use an unnecessary approximation to the latitude difference (based on sinv_latitude) which may break down at high latitudes. The calculation should perhaps be consistent with subsequent volume calculation but without the delta_r factor. This will likely only affect diagnostics calculated in ukca_emiss_diags_mode, where it is used to convert from kg/m2/s to mol/gridbox/s, although it is also printed out in ukca_aero_ctl.

'emission_type', string type attributes no longer recommeneded. Need some time for most new code to adopt these. Still used in AQUM files.

DEPRECATED

Medium-term

Nick Savage

AQUM are addressing the files. Have gone from operational jobs, have ticket to remove from rose-stem. LN to document. These have been removed from AQUM.AQUM work has been done. From AS: In the ancil ticket linked from #2513 (https://code.metoffice.gov.uk/trac/ancil/ticket/782) it says that GA7 depends on the old format files, and as far as I know this is still true. In the 3-step timeline suggested, we haven't reached step 2 unfortunately. That ticket was about ensuring GA8 did not use the old attributes. I believe that GA8 is due for release in the next few months (it has been a very long time coming), so UM vn11.5 may be the last version at which GA7 is supported. Do you mind waiting a bit longer?

10

ASAD families chemistry

None

Families chemistry has not been used for many years (since at least UM6.1. It is likely that it no longer works if turned on, and it complicates the code making other developments harder

DEPRECATED

Short-term

Luke Abraham

11

Dry deposition 9 PFT option

None

The 13 PFT option has been adopted for UKESM1. The 9 PFT option is possibly not being used at all. Proposed in June 2018.

PROPOSED

Long-term

Alan J Hewitt

12

Remove explicit C_SPECIES constants and calculate these from M_SPECIES and the mass of air

Update on UKCA API redesign

JH has been working on redesigning the UM-UKCA interface to remove the model specific coupling.

Progress with Priorities (LA)

The current priorities are:

#

Description

Owner

1

UKCA API

John Hemmings

2

Review UKCA tests to cover all requirements

Luke Abraham / Mohit Dalvi

3

Updates/fixes to GLOMAP routines

4

Standalone UKCA configurations

Luke Abraham

5

Emissions flexibility

Mohit Dalvi

6

Separare UKCA repository

Luke Abraham

7

Non-API LFRic work, e.g. I/O, diagnostics etc.

8

RADAER optimisation

9

FastJX-GLOMAP coupling

10

Cloud-J

11

Fixes for chemistry rates and ASAD (bugs #101 & #103)

Luke Abraham

12

Rc fixes for water (bug #104)

UKESM Core Team

13

CH4 deposition fixes (bug #109)

Gerd Folberth

14

UKCA STASHmaster PP-codes

Luke Abraham

15

Removal of redundant code

ALL

16

GLOMAP-CLIM API refresh

Alan Hewitt

17

N48L85 configuration

18

ACTIVATE optimisation

Re: ACTIVATE optimisation - ACTIVATE is a major bottleneck at all resolutions (NWP & Climate), but progress has been made with using CASIM, so ACTIVATE optimisation is less of a priority at the moment.